A heavy or progressive or graduated income tax is necessary for the proper development of Communism.

Surplus-value and the rate of surplus-value are... the invisible essence to be investigated, whereas the rate of profit and hence the form of surplus-value as profit are visible surface phenomena

Religion is the opiate of the people.

In this sense, the theory of the Communists may be summed up in the single sentence: Abolition of private property. - Manifesto of the Communist Party

The leading princes are the most servile tools of English despotism. . . . The native princes are the stronghold of the present abominable English system.

All forms of the state have democracy for their truth, and for that reason are false to the extent that they are not democracy

The religious world is but a reflex of the real world.